DVI /Audio Matrix Switcher 16x16
PTN Electronics Limited
7
www.PTN-electronics.com
No.
Name
Description
①
DVI INPUTS
DVI input channels, 16 in total.
Female DVI-I connector.
②
DVI OUTPUTS
DVI output channels, 16 in total, female DVI-I
connector.
③
AUDIO INPUTS
Audio input channels, 16 in total.
Captive screw connector.
④
AUDIO OUTPUTS
Audio output channels, 16 in total.
Captive screw connector.
⑤
TCP/IP/RS232
RS232: Serial control port, 9-pin female connector.
TCP/IP: network control port.
⑥
AC100V~240V
Alternating current for power supply, including one
redundant power.
5.2. Audio Signal Connection
The ports
AUDIO INPUTS
can be connected with any audio source devices, such as
DVD player. And the ports
AUDIO OUTPUTS
can be connected with amplifiers.
Audio connection is little complicated than video. It has two kinds of connection:
balanced and unbalanced.
The balanced connection transmits a pair of balanced signals with two signal cords.
Because interferences will have the same intensity and the opposite phases on the
two signal cords, it will be counteracted in the end. For the low frequency extent of the
audio signal, it would be easily interfered under long distance transmission. Therefore,
as an anti-interference connection, it is mostly used in audio connection of special
device.
The unbalanced connection transmits signals only with a signal cord. Without
counteraction, it can be interfered more easily. Accordingly, it is adopted for household
appliance or some cases with low technical demand.
Take the audio signal line for example: 1.Unbalanced: pin “G” connect to SLEEVE, pin
“+” connect to TIP, pin “–” connect to pin “G”; 2.Balanced: pin “G” connect to SLEEVE,
pin “–” connect to RING, pin “+” connect to TIP. As shown in
Figure 5-2
:
Unbalanced Input
Tip
Tip
Sleeve
Balanced Input
Tip
Ring
Tip
Ring
Unbalanced Output
Tip
Tip
Sleeve
Sleeves
Sleeves
Balanced Output
Tip
Ring
Tip
Ring
Sleeves
Figure 5-2 5 bit 3.8mm Audio Balanced/unbalanced Connection
Which connection to select is up to the interface of the device. When available, the
balanced connection is the first choice. Before connection, please read the command